Typewriting machine



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Nov.l 17, v.1942.

H.- J. HART.

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TYP'EWRITING MACHINE Filed April 9, 1941 e sheetsheet s Nov. -17, 1942.

Nov. 17, 1942.` H. J. HART 2,302,627

TYPEWRITNG MACHINE Filed Apr-11,9, 1941 e sheets-sheet e Patented Nov.17, 1942 TYPEWRITING MACHINE Henry J. Hart, West Hartford, Conn.,assigner to Royal Typewriter Company, Inc., New York, N. Y., acorporation of New York Application April 9, 1941, Serial No. 387,745

22 Claims.

This invention relates to typewriting machines and more particularly tomechanism for adjustably positioning or setting stops for arresting .orlimiting movement of typewriter carriages in letter spacing or returndirections. Mechanism embodying the invention is especially suited foradjustably positioning or setting margin stops.

United States Patent to Henry Joseph Hart Number 2,208,367, granted July16, 1940, discloses margin stop setting mechanism including -Figure 'lisafragmentary vertical sectional vie a resilient spring band whichnormally'urges two on the line l-loi Figure 6; carriage-mounted marginstops towards each Figure 8 is a fragmentary transverse vertical otherand towards a frame mounted center stop. section, partly in elevation,showing parts of the Latches on the margin stops normally hold the righthand margin stop control means in their stops in adjusted position andare adapted to be normal positions; released respectively by bailsmounted to rock on Figure 9 is an end elevation of means for conthecarriage, there being two such bails, one astrolling a right hand marginstop with parts sociated with each margin stop'latch.A In acshown intheir operative positions; cordance with the present invention a singleFigure 10 is an end elevation showing mechalatch releasing member orbail may be provided nism for controlling the left hand margin stop, forselectively releasing the two stop latches. the Darts being ShcWn intheir 110111181 pcSitiOnS; An object of the invention is to provideatype- `Figure 11 is a view similar to Figure `10, but writer stopsetting mechanism of the kind reshowing the parts in their operativepositions; ferred to in which the bail or other latch oper-l Figure 12is an end elevation showing mechaating member is so positioned as torelease the 25 nism for controlling the right hand margin Step latch orlatches with a minimum of binding or and means for locking it againstOperation When cramping of the stop on its supporting rod. themechanism'forcontrolling the left hand mar- Another object is to providestop setting mechgin Stop iS in its Operative ccnditicn anism of thekind referred to in which separate Figure 13 iS en end elevation Showingmechamanually operable members are provided for nism fOr controlling theleft hand margin Stcp moving the bail or other latch operating means andmeans for lccking it against Uperation When to release either latchselectively and to insure the mechanism for controlling the right handagainst accidental releasing of both stop latches margin stop iS in itsOperative condition: when it is desired to release only o'ne of them.Figure 14 iS e' Dhentcm perspective View 0f a' A further object is torprovide stop `setting modied embodiment of the invention showingmechanism of the character referred to which is Parts 0f Stop' SettingmecheniSm infuii lines and of simple, light and sturdy construction.indicating their DOSiticning With respect t0 c A further object is toprovide stop setting typewriter frameindicated in dot-dash lines;mechanism of the character referred to and Figure 15 iS a fragmentarydetailed view showwhich includes manually operable means mount- 4o ing astop latch operating bail and mechanism ed on the typewriter main framefor contromng for raising the bail for setting the left hand martheadjustment of a stop or stops mounted on gin Step; the carriage. Otherobjects will become appar- Figure 16 iS a View Simiier t0 Figi-1re 15but ent from a reading of the following detailed deshowing mechanism forlowering the bail for setscription, the appended claims, andtheaccomting the right hand margin Stop; panying drawings, in which: fFigure 17 is a fragmentary transverse vertical Figre 1 is a fragmentaryfront elevational Sectional View 0f a typewriting machine equipped viewof a typewriter carriage showing parts of with stop setting mechanism ofthe kind shown mechanism embodying the invention; in Figure 14;

Figure 2 is a top plan view of an assembly of 50 Figure 18 is a verticalsectional view taken on someof the parts shown in Figure 1; the lineIB-ll of Figure 17 with some parts Figure 3 is a distorted diagrammaticplan view omitted and some parts shown in elevation; and of a resilientstop-urging band and its mounting Figure 19 is a top plan view showingassocimeans; ated margin stops, margin stop rod, and center Y enlargedscale;

Figure 5 is a vertical section on the line 5 5 of Figure 1 and drawn onan enlarged scale;

Figure 6 is a fragmentary horizontal section on the line 5 6, of Figure1 drawn on an enlarged scale and with some parts shown in elevation;

Figure 4 is a rear perspective view of parts 0f a 55 StD?. Y .l

Mechanism constructed and arranged to operate in accordance with theinvention may be embodied vin typewriting or like machines of variouskinds.

The drawings show only such of the usual parts of a typewriter as arenecessary in order to make clear the manner of applying stops andstopsetting mechanisms embodying the invention to -scale D is supportedon the carriage as at 6-6 and is provided along its upper edge with awork sheet and typing aligning scale 1, and along its bottom edge with acarriage positioning scale 8. Central pointers 9 and III formed on atype bar guide E cooperate with the scale D for assisting the operatorto position the carriage. The guide E may be movable vertically for caseshifting, but is held against horizontal travel. A center stop II ofknown kind is pivotally mounted as at |2 on the frame element B, and aline lock lever I3 is pivotally mounted as at I4 on the center stop I Iin a known manner. A tabular stop mounting assembly F is supported onthe carriage, being connected at its opposite ends to the end plates 4and 5 as at I5 and I6 respectively.

Margin stops respectively designated G and G are mounted on and foradjustment along a margin stop rod H having transverse teeth I1 spacedalong its upper face and being supported on and between the carriage endplates 4 and 5.

The left hand margin stop G includes a tubular body IB formed with alateral extension I 9 which receives an adjustable abutment screw 20adapted to cooperate with the center stop I I in a manner to bedescribed, a set screw 2| serving to hold the abutment screw 20 inadjusted position. A latch generally designated 22 is pivotally mountedas at 23 on the body I8, and is provided with a nose 24 adapted to fitbetween adjacent teeth I1 on the margin stop rod H for releasablysecuring the stop G in adjusted position on the rod H. The latch isformed with a horizontal arm 25 extending toward the center of thecarriage, and a spring 26 held in place by a stud 21 is interposedbetween the body I8 and the horizontal arm 25 for yieldably urging thelatch nose 24 toward the teeth I1 of the rod H. A vertical arm 28integral with the horizontal arm 25 between the pivot 23 and latch nose24 is provided with a roller 29 which serves as an actuator forreleasing the latch 22 when the roller 29 is pressed upwardly in amanner to be described later. The vertical arm 28 is formed with afinger piece 30 and a companion nger piece 3| extends upwardly from thebody I8. When it is desired to release the latch 22 manually, the twonger pieces 3|) and 3| may be grasped between the thumb and forenger anda squeezing action exerted.

The construction of the right hand margin stop G' is similar to that ofthe left hand stop G just described, with the exceptions that it isreversed as to right and left hand and the vertical arm 28' of the stopG' is integral with the horizontal arm 25 at the end thereof remote fromthe nose 24 whereby the latch will be released from the rod H when theroller 29 ispressed downwardly. The reversely similar parts of the twostops G and G' are designated by correspending reference characters, thecharacters applied to the stop G being primed.

Means are provided for constantly urging both stops G and G inwardlytoward `the center of the carriage and towards each other. The stopurging means comprises an elongated vcoil power spring I one end ofwhich is connected to an ear 32' on the body |8 of the stop G. From theear 32' the spring I extends to' the left asiat 33 (see Figure 3), andaround a sheave or roller 34 antlfrictionally journaled on a bracket 35secured to the end plate 4 by a screw 36. The spring then extends to theright as at 31 and around a sheave or roller 34' anti-frictionallyjournaled on a bracket 35' secured to the end plate 5 by a screw 36.Thence the spring extends to the left as at 38, and is connected to anear 32 on the body I8 of the stop G. l

To provide free journaling of the rollers', they are mounted byanti-frictionl ball bearings, the bearings for the right hand roller 34'being shown at 39A in Figure 5. Similar ball bearings, not shown, areprovided for freely mounting the left hand roller 34.

In order to prevent accidental fouling or entanglement of the spring Iwith adjacent parts, a housing 40 substantially enclosing the entirespring and mounted under the margin stop rod H is secured to thebrackets 35 and 35' as at 4| and 4I. The construction described thus faris in general similar to construction disclosed and claimed inPatent-2,208,367, previously referred to.

In accordance with the invention a single operatingmember or devicemounted on the carriage is arranged to be selectively operable forreleasing either latch 22 or 22' to permit the spring band I to move theassociated stop G or G up. against the center stop. In the embodimentdisclosed in Figures 1 to 13, inclusive, the operating member comprisesa bail J including a bail bar 42 extending longitudinally of anddirectly over the margin stop rod H. Bail arms 43 and 44 projectingrearwardly from the bar 42 are mounted pivotally on the carriage as at45 and 46 so as to permit the bail to rock about an axis horizontallyoffset from and exterior of the bar 42. Mounting of the roller 29 of thelatch 22 at a level above the roller 29"of the latch 2'2 permits themounting of the bail bai 42 between the rollers 29 and 29' so that therollers are engageable respectively with opposite faces of the bar.

, When the bail is swung upwardly from its normal or neutral positionthe roller 29 will be lifted to release the latch zz and permit the bandI td move the stop G toward the right, whereas when the ball is rockeddownwardly the bar 42 will push down on the roller 29 to release thelatch 22 and permit the spring band I to draw the stop G' to the left.The engagement of the rollers 29 and 29' with the bail bar 42 along aline substantially directly above the rod H eliminates the exertion of aturning or twisting force on the margin stops and thereby preventsbinding or cramping of the stops on the rod H.

Means for lowering the bail to release the right hand margin stop Gincludes a manually operable lever member 41 pivoted as at 48 on the endplate 5. The lever 41 is formed with a seat 49 which normally engagesapin 50 fixed to an extension 5I of the bail arm 44 so as to support thebail in its normal or neutral position in which it has no operativeengagement with the latch rollers 29 and 29'. The lever 41 is formedwith a cam slot 52 the inclination of which is such that when the leveris rocked counterclockwise from the position shown in Figure 8 to theposition shown in Figure 9 it will cam the pin 50 downwardly and rockthe bail so as to pressv downwardly on the roller 29 of the latch 22'thereby releasing the margin stop G. Preferably the groove 52 terminatesin a seat 53 adapted to receive the pin 50 so as to retain the bail inits lowered position until the lever 41 is manually pushed back to itsnormal position shown in Figure 8. The lever is yieldably restrainedfrom moving `from its normal position by a spring 54 held on thecarriage end plate by screws 55 and 56, the upper end of the springpressing against a flat surface 51 on the lever 41. The normal positionof the lever 41 may be adjusted nicely by means of an eccentric cam 58secured to the end plate 5 by a screw 59. As will be described later,control means mounted at the left hand end of the carriage are adaptedto raise the bail J for releasing the latch 22 of the left hand marginstop. To permit the bail to be raised without interference by the lever41, the upper part of the leverl is cut back as at 60 so as to providefor free uninterrupted upward movement of the pin 50. Figures 10, 11,and 13 show manually operabl control means for raising the ball Jto-press upwardly on the roller 29 and release the latch 22. A manuallyoperable lever member 6|, pivoted as at 62 to the carriage end plate 4,is'provided with a finger 63 the end of which normally overlies a pin 64on an extension 65 of the arm 43, thereby normally preventing upwardmovement of the bail. The finger 63, which normally prevents upwardmovement of the bail, cooperates with the seat 49 on the manuallyoperable lever 41 which normallyprevents downward movement of the bailto hold the bail normally in a neutral position in which it has nooperative engagement with the latch actuator rollers 29 and 29'. Themanually operable lever 6| is formed with a cam slot 66 the inclinationof which is such as to push upwardly on the pin 64 and rock the bailupwardly when the lever 6| is rocked from its normal position, shown inFigure 10, to its operative position, shown in Figure 11. Preferably,the groove 66 terminates in a seat 61 adapted to receive the pin 64 formaintaining the bail raised spring band I to pull the stop G towardv theright to abut against a'buffer 15 pivoted as at I4 on the center stopand provided' with a cushioning spring 16. The carriage may then bemoved until the pointer 9 or the pointer I registers with the marking onthe vscale D. The lever 6| will then be swung rearwardlyto kthe positionshown in Figure 10 thereby lowering the bail to its neutral position andpermitting the spring 26 to return the latch 22 to its holding position,whereupon the stop G will be locked in adjusted Aposition on the rod H.

In order toset the right hand stop G' the cam lever 41 is swungforwardly from the position s hown in Figure 8 to the position shown inFigure 9, thereby lowering the bail J and pushing downwardly on therollerl 29 of the latch 22' which is thus disengaged from the rod H,permitting the band I to pull the stop G up against the line lock lever|3 on the margin stop Il. The carriage is then moved until the pointer 9or the pointer I U registers with the marking '10 on the scale D and thelever 41 is then pushed rearwardly to the position shown in Figure 8,thereby raising the bail to its neutral position and permitting thelatch 22 to reengage the rod H and lock the stop G' in adjusted positionon the rod.

It will be observed that after setting of the left hand margin stopG byoperation of the lever 6| and upon return of the lever 6| to its normalposition, the seat 49 on the lever 41 will retain the pin 50 andconsequently the bail "J against accidental downward movement so that itis not possible for the bail to overthrow downwardly. Therefore therightv hand stop G' will not be released from the rod H unless the lever41 is moved. Similarly, during operation of the lever 41 after settingthe right hand margin stop G', the finger 63 on the lever 6| willprevent upward overthrow of thebail upon return of the lever 41 to itsFigure 8 positionvand consequently will prevent unintentional release ofthe latch `22 of the Stop G'.

It is desirable tov prevent swinging of both operating members 41 and 6|to their operative positions at the same time because, if suchsimultaneous movement were permitted or if movement of one of thesemembers'were permitted after the other member already had been moved tooperative position, the bail would be strained by being moved downwardlyat its right hand end and upwardly at its left hand end. Accorduntil thelever 6| is manually pushed back-to its normal position. The lever isheld against accidental displacement from its normal position by aspring 68 held on the carriage end plate 4 by screws 69 and 16, thespring bearing against a at surface 1| on the bottom of the lever 6|.The normal position of the lever 6| may be ad-- justed nicely by meansof an eccentric stop 12 secured to the end plate 4 by a screw 13. Inorder to enable the bail J to be moved downwardly by operation of thelever 41 in the manner previously described the lever 6| is cut away asat 14 to provide clearance for uninterrupted upwardly and lift the latchnose 24 out of engagement with the toothed rod H, permitting the ingly,means are provided for locking either of the manually operable levers 41and 6| against operation when the other of the levers has been moved toits operative position. In the embodiment shown an ear 11 on the lever41 is positioned so as normally to pass over an ear 18 on the bail Jwhen the bail is in its normal position and the lever 41 is rocked toitsoperative position. If, however, the bail has been raised to theposition shown in Figures 11 and 12 by operation of the y lever 6I, thebail carried ear 18 will be disposed in the path of the ear 11 on thelever 41 so as to prevent swinging of the lever 41 to its operativeposition. Similarly, the operating lever 6| is provided with an ear,19which is so positioned as to pass under an ear 80 on the bail J when thebail is in its normal position and the lever 6| is rocked to itsoperative position. If, however, the bail is in its lowered position, asshown in Figures 9*.and 13, the ear on the bail will be disposed in thepath of the year 19 on the lever 6| so as to prevent swinging of thelever 6| to its operative position.

Figures 14 to 19, inclusive, show a modification in which the manuallyoperable means for releasing the margin stop latches includes fingerkeys mounted on the main frame and constrained against movement in thedirection of lating mechanism or the stop setting mechanism. Figure I1shows a tabulating stop nger |22 pivoted as at |23 on the bracket IIS.One end of an adjustable link |24 is pivotaliy conrace and beingsupported on and between the carriage end plates |09 and ||0.

The right hand margin stop K includes a tubular body |42 formed with alateral extension carriage traveL l y 5 |43 which receives an adjustableabutment screw The typewriter wnemcmdnadmer I?? trt ipln itt om e e Atgrelalcalirigpsz'a;Dsizipported 01:1 the carment screw |44 in adjustedposition. A latch crn gnd t pe bar guide E' The main frame generallydesignated |46 is pivotally mounted as irns al rar wall Inl, end'walls|02 and |03, 1o at |41 on the body |42, and is provided with a 4,Mounted on the nose |48 adapted to t between adjacent teeth giranalrregaeingnt frame |05 suplll on the margin stop rod L forreleosa 1vlookported on a fixed track |06, which, through bali ine grsefsiuringrli'srlie18131;1 ii n adiiustetdhposliltion bearings |01,mounts a carriage bearing rail 0n t e ro L. e a s orme w1 a or- |08extending betwen and connecting carriage 15 ggtririmrrelglxateiggi'ifvgaidiltiirbgi en'lhlelactrialggeag ils lurged to the left in lettertween the body N2V and the ilorizontil arm H by a me Smm :agaat?riarrangiate. maar -of a known kind, and is controlled by escapedth n H9 d t ith chment mechanism supported on the frame |05. e .1011 1 ethan ac oopfera es vt ilcase The escapement mechanism also may be of aan Sm 0064 0n e In 1n rame o known kind and only so Ifnuclilstof It iisshwn tm'lliaetcxlzloxlisiruction of the left hand 'margin in thedrawings as maybeo ass ance nun eri standing the present invention. Itncludesan l toil tlesltginghaftletglolldescp escapement Wheel' H I andan escapemept pmlon 25 versed as to right and left hand and the arm |49'||2 journaled on the frame |05, thehpcllnion ||2 on the latch 6, of theStob K, is provided h t t e esca egngfg tgarrl-l gift Bah): ||4mougtwith a vertical extension |49" which mounts the l ed on thecarriage by means (not shown) per roller |5| highter than the roller |5|of the matin the bar and rack H3 to be raised out Stop K- Otherwise thereversely similar parte f en ga ement with the 'pinion for rendering 30of the two stops are designated by correspondo g g ing referencecharacters, those applied to parts the escapement mechanism meiective.of the stop K' being primed l t Cent?? iig??copeactelwsitmtlllildseiletg Means Provided forllring the Stops towardsype a- -g i h each other and each toward the center stop may lorasslstmg the Operator o PDS on t e car- 35 be the same as the stopurging means described riage' A center stop In'ls plvotauy moultes inconnection with Figures 1 to 13, inclusive. asiat H8 Oula' backet lurugniegnepwais A Spring band' M has its ends connected to ears lo A tabu ats op m0 ig y |52 and |52 on the stops K and K' respectivesupported onthe carriage, being connected at ly' and is trained around rollers |53and 53, s opposlte ends to the end plates 'Us and 40 journaled at |54and |54' on brackets |55 and u by stu. 'zo and. '2| respetlvely' |55secured by screws |56 and |56 to the car- .Stqp settmg mechanismembodymg the invefl' riage end plates ||0 and |09. A housing |51 non 1S.adapteqto be Incorporated m.typew.nt` substantially encloses the springband. In opvers eqmpped Wm? tabulatmg mecha'msm with" eration the roller|5| on the latch |46 of the out interference in the operation of thetabu- 45 stop K is pressed downwardly to disengage the latch nose |58from the margin stop rod Lito permit the spring band M to move themargin stop K up against the center stop I1. Lifting of the roller |5|on the latch |46 will disengage the `nose |48 from the rod L so as to..permit the spring band M to move the stop K' nected as at to thecenter stop ||1, the oth Qm end o1 the link |24 being pivotallyconnecte' Y as at |26 to the tabulating finger |22. An extension |21 onthe center stop is connected by a link |28 tothe upper end of a rock arm|29 mounted on a shalt |30 carried by the frame A. A tabuiator key lever|3I 'on the snart lau has an arm |32 provided with an ear |33 extendingbehind the rock arm |29. vNormally the key lever |3| is held up againsta stop |34 by a spring j|35 anchored on a part |36 or tne Irame A. Whenthe key leverv 13| `is depressed the arms |32 andJzs `are rocked to pullthe link ing transverse teeth |4| spaced along its upper 75 up againstthe center stop ||1.

For lowering and raising the rollers |5| and |5|', respectively, a bailN including a bail bar |58 and arms |59 and |60is pivotally mounted onthe end plates |09 and ||0 as at |6| and |62 so as to rock about an axishorizontally displaced from and to the rear of the rod L. The bar |58extends between the rollers |5| and |5|', therollers and bar beingdisposed directly above the margin stop rod L. A front edge portion |63of the bail bar projects in front of the margin stop rod L.'

Means for operating the bail is mounted on the main frame and is adaptedto cooperate with the bail irrespective of the position of the carriageon the frame. A shiftable link member |64 formed with a notch |65 whichreceives the front edge portion |63 of the bail is mounted for verticalmovement on the frame by means of parallel carrying links |66 and |61which are pivoted to the linkV |64 as at |68 and |69, respectively, andare pivoted as at |10 and |1| to brackets |12 and |13 supported on therear wall |0| of the main trame. The intermediate portion of the frame.

link |64 is formed with a rearwardly extending offset |645a to enablethe link to extend past and yet clear the conventional typewriter parts,such as the escapement frame |05.

The lower end of the link |64 is offset rearwardly asat |64b and isprovided with a pin 14 which extends to both sides of the link. On theright side of the link a shaft |15 is journaled in brackets |16 and |11supported on the framev rear wall A cam plate |18 secured to the shaft|15 is formed with`a seat |19 which normally supports the pin |14 andwith it the link |64 and the bail N in their neutral or normal positionswherein the bail has no operative ensagement with either the roller orthe roller |5|. The cam plate |18 ls formed wtih a cam groove |80 ofsuch shape that when the plate |18 is rocked counter-clockwise, asviewed in Figure 16, the pin |14 and link |64 will be drawn downwardlyand the bail N will be rocked downwardly so as to depress the roller |5|and release the latch |46 of the stop K, thus enabling the spring band Mto pull the stop K toward the left and against the center stop H1. Foroperating the shaft |15 and cam plate |18 a rock arm |8| secured to theshaft |1-5 is pivoted as at |82 to the rear end of a pull link |83, theforward end of which is pivoted as at |84 to a lever |85 pivoted on arod |86 carried on a part |36 of the main An arm |81 of the lever |85extends upwardly for connection to a restoring spring |88 anchored to apost |89 on the frame part |36. 'A stop lug |90 integralwith the arm |81abuts against the frame part |36 for limiting the restoring movement ofthe lever |85. A push key |9| lextends through the front wall |04 oi'.the machine frame and the frame part |36 and is engageable with an ear|92 on the arm |81 of the lever |85. Pushing of the key |9| inwardlyrocks th^ lever |85 clockwise as viewed in Figure 17 to pull on the link|83 and rock the cam plate |18 counter-clockwise, thereby moving the pin|69 and the link |64 downwardly, rocking the bail N and releasing thelatch on the stop K as previously described. It will be observed thatwhen the cam plate |18 is in its normal position as shown in full linesin Figure 16, clearance is proconnected to it a restoring spring 201which is anchored similarly to the anchoring of the restoring spring|88.; A push key 208 extending through the frame front wall |04 isengageable with an ear 209 on the arm 206 of the lever 204 for rockingthe lever when the key 208 is pressed. Such rocking of the lever pullsforwardly on the link 202 and rocks the shaft |94 and cam plate |91counter-clockwise as viewed in Figure 15 so as to release the latch |46'in the manner already described. It will be observed that the 'shape ofthe cam plate |91 is such as to provide clearance to permit downwardmovement of the pin |14 when the cam plate is in its normal position andthe other cam plate |18 is operated to release the latch |46 of the stopK.

The procedure followed in setting or adjusting the positions of themargin stops K and K' is similar` to that described above in connectionwith the setting of the margin stops G and G' of the embodimentdisclosed in Figures 1 to 13, inclusive. When the cam plate |91 isreturned to its normal position after setting the left hand stop K',downward overthrow of the link |64 and bail N will be prevented byengagement of the pir- |14 with the seat |19 on the cam plate |18. Whenthe cam plate I 18 is returned to its nory mal position, after settingthe right hand stop videdsabove the pin |14 for permitting 'the latterto be moved upwardly for setting of the left hand margin stop K in amanner to be described.-

. ting of the margin stop K. includes a shaft |94 carried by brackets|95 and |96 supportedl on the rear frame wall |0|. A cam plate |91,fixed to the shaft |94, is provided with an upper finger portion |98which normally overlies the pin |14' K, upward overthrow of the link|64v and bail N will be prevented by engagement of the pin |14 with thefinger |98 on the -cam plate |91.

The mechanisms disclosed herein embody the invention in the nowpreferred forms, but it will be understood that changes may be madewithout departing from the invention as defined in the claims.

I claim:

1. In a typewriter or like machine; a f rame element; a carriage elementmounted thereon for letter-spacing and-return movements; a center stopmounted on one of said elements; a pair of margin stops coopera'ble withsaid center stop; means mounting said margin stops on the other of saidelements for adjustment towards and from each other in the vdirection ofcarriage travel; means urging said margin stops towards each other;releasable means respectively securing said margin stops in adjustedpositions on said mounting means; an actuator movable in one directionfor releasing the securing means assof ciated with one of said marginstops; an actu# y ator movable in the opposite direction for releasfornormally preventing upward movement of the K up against the center stop.For rocking the shaft |94 and cam plate |91, a-rock arm 200 fixed to theshaft |94 is pivoted as at 20| to the rear end of a link202, the forwardend of which is piv-A oted as at 203 to a lever 204 pivoted as at 205 onthe rod |86. An arm 206 of the lever 204 has The cam plate |91 isV ingthe securing means associated with the other.'

of said margin stops; an'operating member movably mounted on said otherelement and extend-l ing longitudinally of the direction of adjustmentof said margin stops and between said actuators; and means for movingsaidoperating member in lopposite directions for selectively moving saidactuators in their respectively releasing directions.

2. In a typewriter or like machine; a frame element; a carriage elementmounted thereon for letter-spacing and return movements; a center f stopmounted on one of said elements; a pair of margin stops cooperable withsaid center stop;

'means mounting said margin stops on the other of said elements foradjustment towards and from each other in the direction of carriagetravel; means urging said margin stops towards each other; releasablemeans respectively securing said margin stops in adjusted positions onsaid mounting means; an actuator movable in one direction for releasingthe securing means associated with one of said margin stops; an actuatormovable in the opposite direction for releasing the securing meansassociated with the other of said margin stops; an operating bar movablymounted on said other element and extending longitudinally of thedirection of margin stop adjustment and between said actuators; andmeans for moving said bar bodily in opposite directions for selectivelymoving said actuators in their respectively releasing directions.

3. In a typewriter or like machine; a frame element; a carriage elementmounted thereon for letter-spacing and return movements; a center stopmounted on one of said elements; a pair of margin stops cooperable withsaid center stop; means mounting said margin stops on the other of saidelements for adjustment towards and from each other in the direction ofcarriage travel; means urging said margin stops towards each other;releasable means respectivelyv securing said margin stops in adjustedpositions on said mounting means; an actuator movable in one directionfor'releasing the securing means associated with one of said marginstops; an actuator movable in the opposite direction for releasing thesecuring means associated with the other of saidmargin stops; anoperating bar extending longitudinally of the direction of margin stopadjustment and between said actuators; means pivoting said bar on saidother element to swing bodily about an axis offset from and exterior ofthe bar; and means for rocking said bar bodily in opposite directionsabout said onset axis for selectively moving said actuators in theirrespectively releasing directions.

4. In a typewriter or like machine; a frame element; a. carriage elementmounted thereon for letter-spacing and return movements; a center stopmounted on one of said elements; a

toothed rod mounted on the other o! said elements and extending in thedirection of carriage travel; a pair of margin stops mounted foradjustment on said rod and being cooperable with said center stop; meansurgingsaid margin stops towards each other; latches on said margin stopsrespectively engageable with said toothed rod for releasably securingsaid margin stops in adjusted positions; actuators connectedrespectively to said latches and being movable in opposite directionsfor disengaging the respectively connected latches from said rod; a.bail pivoted to swing on said other element about an axis horizontallyoffset from said rod and having a bail bar extending along and adjacentsaid rod and between said actuators; and means for rocking said bail inopposite directions for selectively moving said actuators in theirlatch-disengaging directions.

5. In a typewriter or like machine; a frame element; a carriage elementmounted thereon for letter-spacing and return movements; a center stopmounted on one of said elements; a toothed rod mounted on the other ofsaid elements and extending in the direction of carriage travel; a pairof margin stops mounted for adjustment on said rod and being cooperablewith said center stop; means urging said margin stops towards eachother; latches on said margin stops respectively engageable with saidtoothed rod for releasably securing said margin stops in adjustedpositions; a bail pivoted to swing on said other element about an axishorizontally offset from said rod and having a bail bar extending alongand directly over said rod; actuators connected respectively to saidlatches and being disposed respectively above and below said bar andbeing movable upwardly and downwardly respectively for disengaging therespectively associated latches from said rod; and means for swingingsaid bail to move said bar selectively upwardly and downwardly.

6. In a typewriter or like machine; a frame element; a carriage elementmounted thereon for letter-spacing and return movements; a center stopmounted on one of said elements; a toothed rod mounted on the other oisaid elements and extending in the` direction of carriage travel; a pairof margin stops mounted for adjustment on said rod and being cooperablewith said center stop; means urging said margin stops towards eachother; latches on said margin stops respectively engageable with saidtoothed rod for releasably securing said margin stops in adjustedpositions; a bar movably mounted on said other element and extendingalong and directly over said rod; actuators connected respectively tosaid latches and being disposed respectively above and below said barand being movable by sai'd bar upwardly and downwardly respectively fordisengaging the respectively associated latches from said rod; and meansfor moving said bar selectively upwardly and downwardly.

7. In a typewriter 'or like machine; a frame element; a carriage elementmounted thereon for letter-spacing and return movements; a center stopmounted on one oi' said elements; a pair of margin stops cooperable withsaid center stop; means mounting said margin stops on the other of saidelements -for adjustment towards and from each other in the direction ofcarriage travel; means urging said margin stops towards each other;releasable means respectively securing said margin stops in adjustedpositions on said mounting means; releasing means for releasingrespectively the securing means associated with said margin stopsincluding a manually operable member operation ot which efiectsreleasing of the securing means associated with one of said marginstops, and another manually operable member operation o1' which effectsreleasing of the securing means associated with the other of said marginstops; and means for locking one of said manually operable membersagainst operation when the other of said manually operable members isoperative.

8.v In a typewriter or like machine; a frame element; a carriage elementmounted thereon for letter-spacing and return movements; a center stopmounted on one of said elements: a pair of margin stops cooperable withsaid center stop; means mounting said margin stops on the other of saidelements for adjustment towards and from each other in the direction ofcarriage travel; means urging said margin stops towards each other;releasable means respectively securing said margin stops in adjustedpositions on said mounting means; releasing means for releasingrespectlvely the securing means associated with said margin stopsincluding a manually operable member operation of which effects renlleasing of the `securing means associated with element; a carriageelement mounted thereon forletter-spacing and return movements; a centerstop mounted on one of said elements; a pair oi margin stops cooperable`with said center stop; means mounting said margin stops on the other ofsaid elements for adjustment towards and from each other in thedirection of carriage travel; means urging said margin stops towardseach other; releasable means respectively securing said margin stops inadjusted positions on said mounting means; a device for selectivelyreleasing the securing means associated with said margin stops; a iirstmanually operable member for moving said device to release the securingmeans associated with one of said margin stops; a second manuallyoperable member for moving said device to release the securing meansassociated with the other of said margin stops; and means responsive tooperating movement of either one of said manually operable members toreleasing position for preventing operation of the other manuallyoperable member until said one manually operable member has beenreturned to non-releasing position.

10. In a typewriter or like machine; a frame element; a carriage elementmounted thereon for letter-spacing and return movements; a center stopmounted on one of said elements; a pair of margin stops cooperable withsaid center stop;

lmeans mounting said margin stops on the other of said elements foradjustment towards and from each other in the direction of carriagetravel; means urging said margin stops towards each other; releasablemeans respectively securing said margin stops in adjusted positions onsaid mounting means; a device mounted on said other element for movementfrom a normal ineffective position in opposite directions .respectivelyfor selectively releasing said securing means; a manually operablemember for moving said device inone direction only from said normalposition; and another manually operable member for moving said device inthe opposite direction only from said normal position.

11. In a typewriter or like machine; a frame element; a carriage elementmounted thereon for letter-spacing and return movements; a center stopmounted on one of said elements; a toothed rod mounted on the other ofsaid elements and extending in the direction of carriage travel; a pairof margin stops mounted for adjustment on said rod and being cooperablewith said center stop; means urging said margin stops towards eachother; latches on said margin stops respectively engageable with saidtoothed rod for releasably securing said margin stop's in adjustedpositions; actuators connected respectively to said latches and beingmovable in opposite directions for disengaging the respectivelyconnected latches from said rod; a bail pivoted to swing on said otherelement about an axis horizontally oiset from said rod and having a bailbar extending along and adjacent said rod and between said actuators,said bail bar being adapted to normally occupy a neutral position inwhich it has no eiective engagement with said actuators; a manuallyoperable member' for rocking said bail in one direction only from saidneutral position for moving one of said actuators in itslatch-disengaging direction; and another manually operable member forrocking said bail in the other direction only from said neutral positionfor moving the other of said actuators in its latch-disengagingdirection.

12. In a typewriter or like machine; a frame element; a carriage elementmounted thereon for letter-spacing and return movements; a center stopmounted on one of said elements; a

toothed rod mounted on the other of said elements and extending in thedirection of carriage travel; a pair of margin stops mounted foradjustment on said rod and being cooperable with said center stop; meansurging said margin stops towards each other; latches on said marginstops respectively engageable with said toothed rod for releasablysecuring said margin stops in adjusted positions; actuators connectedrespectively to said latches and being movable in opposite directionsfor disengaging the respectively connected latches from said rod; a bailpivoted to swing on said other element about an axis horizontally offsetfrom said rod and having a bail bar extending along and adjacent saidrod and between said actuators, said bail bar being adapted to normallyoccupy a neutral position in which it has noeffective engagement withsaid actuators; a pin on one end of said bail; a manually operablemember pivoted on said toothed rod mounting element and having a seatcooperable with said pin for normally maintaining said bail bar in saidneutral position and having a cam groove cooperable with said pin, saidmanually operable member being adapted upon being moved about its pivot,and through the cooperation of said cam groove with said pin, to movethe pin and bai-l bar in one direction from said neutral position formoving one of said actuators in its latch disengaging direction; asecond pin on the other end of said bail; and a second manually operablemember pivoted on said toothed rod mounting element and having a camgroove cooperable with said second pin for moving the bail bar in theopposite direction from said neutral position for moving the other ofsaid actuators in its latch-disengaging direction, each manuallyoperable member being formed to provide clearance for movement of theassociated pin when that member is in its normal or inactive positionand the other manually operable member is actuated to move said bail. l

13. In a typewriter or like machine; a main frame; a carriage mountedthereon for letterspacing and return movements; a center stop on saidframe; a pair of margin stops cooperable with said center stop; meansmounting said margin stops on said carriage for adjustment in thedirection of carriage travel; means for urging said margin stops towardseach other; releasable means respectively securing said margin stops inadjusted positions on said carriage; an actuator movable in onedirection for releasing the securing means associated with one of saidmargin stops; an actuator movable in the opposite direction forreleasing the securing means associated with the other of said marginstops; an operatingrmernber extending longitudinally of the direction ofadjustment of said margin stops and between said actuators; meansmounting said operating member movably on said carriage; and

means for moving said operating member in opposite directions forselectively moving said actuators in their respectively releasingdirections.

14. In a typewriter or like machine; a main frame; a carriage mountedthereon for'letterspacing and return movements; a center stop on saidframe; a toothed rod mounted on said carriage and extending in thedirection ofl carriage travel; a pair of margin stops mounted foradjustment on said rod and being cooperable with said center stop; meansurging said margin stops towards each other; latches on said marginstops respectively engageable with said toothed rod for releasablysecuring said margin stops in adjusted positions; actuators connectedrespectively to said latches and being movable in' opposite directionsfor disengaging the respectively connected latches from said rod; a bailpivoted on said carriage to swing about an axis horizontally oset fromsaid rod and having a bail bar extending along vand adjacent said rodand between said actuators; and means for rocking said bail in oppositedirections for selective f' moving said actuators in theirlatch-disengaging directions.

15. In a typewriter or like machine; a main frame; a carriage mountedthereon for letterspacing and return movements; a center stop on saidframe; a toothed rod mounted on said carriage and extending in thedirection of carriage travel; a pair of margin stops mounted foradjustment on said rod and being cooperable with said center stop; meansurging said margin stops towards each other; latches on said marginstops respectively engageable' with said toothed rod for releasablysecuring said margin stops in adjusted positions; actuators connectedrespectively to said latches and being movable in opposite directionsfor disengaging the respectively connected latches from said rod; a bailpivoted on said carriage to swing about an axis horizontally offset fromsaid rod and having a bail bar extending along and adjacent said rod andbetween said actuators; a manually operable member for rocking said bailin one direction for moving one of said actuators in itslatch-disengagingl direction and for locking said bail in the positionto which it has thus been rocked; and another manually operable memberfor rocking said bail 'in the opposite direction for moving the lotherdirection of carriage travel; meansfor urging said margin stops towardseach other; releasable means respectively securing said margin stops inadjusted positions on said carriage; releasing means for releasingrespectively the securing means associated with said margin stopsincluding a manually operable member operation of which effectsreleasing of the securing means associated with one of said mai ginstops, and another manually operable member operation of which eiectsreleasing of the securing means associated with the other of said marginstops; and means for locking either of said manually operablemembersvagainst operation when the other of said manually operablemembers is operative.

17. In a typewriter or like machine; a main frame; a carriagemountedvthereon for letterspacingV and return movements; a center stopon securing means and in the opposite direction for releasing the otherof said securing means; and means for moving said bar selectively insaid directions including a shifting member having portions engageablewith opposite faces of said bar, means mounting said member shiftably onsaid main frame, and manually operable means on said main frame forshifting said member.

18. In a typewriter or like machine; a main frame; a carriage mountedthereon for letterspacing and return movements; a center stop on saidframe; a pair of margin stops cooperable with said center stop; meansmounting said margin stops on said carriage for adjustment in thedirection of carriage travel; means for urging said margin stops towardseach other; releasable means respectively securing said margin stops inadjusted positions on said carriage; means for selectively releasing thesecuring means including a bar extending longitudinally of the line ofadjustment of said margin stops on said carriage; means mounting saidbar on said carriage to move in one direction for releasing one of ksaidsecuring means and in the opposite direction for releasing the other ofsaid securing means; and means for moving said bar selectively in saiddirections including a shift link extending transversely to said bar andhaving a notch which receives an edge portion of the bar for relativesliding movement, means 'mounting said shift link on said frame forshifting movement transversely of said bar, and manually operable meanson said frame for shifting said shift link.

19. In a typewriter or like machine; a main frame; a carriage mountedthereon for letterspacing and return movements; a center stop on saidframe; a' pair of vmargin stops cooperable with said center stop; meansmounting said margin stops on said carriage for adjustment in thedirection of carriage travel; means for urging said margin stops towardseach other; releasable means respectively securing said margin stops inadjusted positions on said carriage; means for selectively releasing thesecuring means including a bar extending longitudinally of the rline ofadjustment of said margin stops on said carriage; means mounting saidbar on said carriage to move in one direction for releasing one of saidsecuring means and in the opposite direction for releasing the other ofsaid securing means; and means for moving said bar selectively in saiddirections including a shift link extending transversely to said bar andhaving a notch which receives an edge portion of the bar for relativesliding movement, a pair of spacedcarrying links each pivoted to saidframe and to said shift link to thereby mount said shift link on saidframe for shifting movement transversely oi' said bar, and manuallyoperable means on said frame for shifting said shift link.

20. In a typewriter or like machine; a main frame; a carriage mountedthereon for letter- I spacing and return movements; Ya center stop onsaid frame; a toothed rod mounted on said carriage and extending in thedirection of carriage travel; a pair of margin stops mounted foradjustment on said rod and being cooperable with said center stop; meansurging said margin stops towards each other; latches on said marginstops respectively engageable with said toothed rod for releasablysecuring said margin stops in adjusted positions; actuators connectedrespectively to said latches and being movable in opposite directionsfor disengaging the respectively connected latches from said rod; a bailpivoted on said carriage to swing about an axis horizontally offset fromsaid rod and having a bail bar extending along and adjacent said rod andbetween said actuators; and means for rocking said bail in oppositedirections for selectively moving said actuators in theirlatch-disengaging directions including a shift link extendingtransversely to said bail bar and having a notch which receives an edgeportion of the bail bar for relative sliding movement, means mountingsaidv shift link on said frame to shift transversely of said bail bar,and manually operable means on said frame for shifting said shift link.

21. In a typewriter or like machine; a main frame; 'a carriage mountedthereon for letterspacing and return movements; a center stop on saidframe; a pair of margin stops cooperable with said center stop; meansmounting said margin stops on said carriage for adjustment in thedirection of carriage travel; means for urging said margin stops towardseach other; releasable means respectively securing said margin stops inadjusted positions on said carriage; means for selectively releasing thesecuring means including a bar extending longitudinally oi the line ofadjustment of said margin stops on said carriage; means mounting saidbar on said carriage to move in one direction for releasing one of saidsecuring means and in the opposite direction for releasing the other ofsaid securing means; and.

means for moving said bar selectively in said directions including ashift link extending transversely to said bar and having a notch whichreceives an edge portion oi the bar for relative sliding movement, meansmounting said snift link on said frame for shifting movementtransversely of said bar, a pin Ion said shift link extendingtransversely to the direction oi' shifting thereof, and manuallyoperable means including a cam 4said trame; a pair o! margin stopscooperable with said center stop; means mounting said margin stops onsaid carriage for adjustment in the direction of carriage travel; meansfor urging said margin stops towards each other; releasable meansrespectively securing said margin stops in adjusted positions on saidcarriage; means for selectively releasing the securing means including abar extending longitudinally of the line of adjustment of said marginstops on said carriage; means mounting said bar on said carriage to movein one direction for releasing one of said securing means land intheopposite direction for releasing the other of said securing means; andmeans for moving said bar selectively in said directions including ashift link extending transversely to said bar and having a notch whichreceives an edge portion of the bar for relative sliding movement,

means mounting said shift link on said frame for shifting movementtransversely of said bar, a pin carried by said shift link andextendingtransversely to the direction of shifting thereof, a ilrstcooperable with said pin for shifting said link cam member movablymounted on said frame and being cooperable with said pin for shiftingsaid link in one direction from a neutral position and back to saidneutral position, a. second cam membermovably mounted on said frame andbeing in the opposite direction from said neutral position and back tosaid neutral position, and manually operable means mounted on said framefor selectively operating said two cam members.

5 HENRY J. HART.

